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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/57687
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dc.creatorLudmila Maria Diniz Leroypt_BR
dc.creatorThiago Martins Franciscopt_BR
dc.creatorHelena J. Shepherdpt_BR
dc.creatorMark R. Warrenpt_BR
dc.creatorLucy K. Saunderspt_BR
dc.creatorDavid A. Shultzpt_BR
dc.creatorPaul R. Raithbypt_BR
dc.creatorCarlos Basílio Pinheiropt_BR
dc.date.accessioned2023-08-10T14:53:41Z-
dc.date.available2023-08-10T14:53:41Z-
dc.date.issued2021-
dc.citation.volume60pt_BR
dc.citation.issue12pt_BR
dc.citation.spage8665pt_BR
dc.citation.epage8671pt_BR
dc.identifier.doihttps://doi.org/10.1021/acs.inorgchem.1c00638pt_BR
dc.identifier.issn1520-510Xpt_BR
dc.identifier.urihttp://hdl.handle.net/1843/57687-
dc.description.resumoThe mononuclear cobalt complex of 3,5-di-tert-butylcathecolate and cyan-pyridine (Co(diox)2(4-CN-py)2) is a very versatile compound that displays valence tautomerism (VT) in the solid state, which is induced by temperature, light, and hard X-rays, and modulated by solvent in the crystal lattice. In our work, we used single crystal X-ray diffraction as a probe for the light-induced VT in solid state and demonstrate the controlled use of hard X-rays via attenuation to avoid X-ray-induced VT interconversion. We report photoinduced VT in benzene solvated crystals of Co(diox)2(4-CN-py)2 illuminated with blue 450 nm light at 30 K with a very high yield (80%) of metastable hs-CoII states, and we also show evidence of the de-excitation of these photoinduced metastable states using red 660 nm light. Such high-yield light-induced VT had never been experimentally observed in molecular crystals of cobalt tautomers, proving that the 450 nm light illumination is triggering a chain of events that leads to the ls-CoIII to hs-CoII interconversion.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofInorganic Chemistry-
dc.rightsAcesso Restritopt_BR
dc.subjectValence tautomerismpt_BR
dc.subjectBistabilitypt_BR
dc.subjectCobalt complexespt_BR
dc.subject.otherTautomeriapt_BR
dc.subject.otherCobaltopt_BR
dc.titleControlled light and temperature induced valence tautomerism in a cobalt-o-dioxolene complexpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://pubs.acs.org/doi/10.1021/acs.inorgchem.1c00638pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4272-0298pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-8722-4127pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0832-4475pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-1326-0744pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-5689-8129pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-8121-6812pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-2944-0662pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8674-1779pt_BR
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